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Transcription and Regulation

Transcription and Regulation
Transcription factors are

proteins which bind to DNA and regulate transcription
CATT boxes
promoters
TATA boxes

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Transcription and Regulation
Each tRNA molecule has a cloverleaf secondary structure consisting of

either (a) or (b)
four stem loops
two stem loops
three stem loops

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Transcription and Regulation
The RNA polymerases that transcribe bacterial DNA are

multisubunit enzymes
interchangable with DNA polymerases
only active inside the cell
highly glycosylated in their active forms

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Transcription and Regulation
Transcription begins

none of these
upstream from the start codon
downstream from the start codon
at the start codon

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Transcription and Regulation
Transcription by E. coli polymerase occurs in

two phases known as initiation and termination
three phases known as initiation, elongation and termination
None of these
four phases known as initiation, propagation, elongation and termination

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Transcription and Regulation
The nucleons of eukaryotic cell has

RNA polymerase III
all of these
RNA polymerase I
RNA polymerase II

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